unix bash syntax error near unexpected token 'do' - bash

Question

I created a unix minecraft launcher. it worked perfectly fine just an hour and a half ago (as of 9:30). then I got this:
/home/axium1998/MinecraftMegaLauncher.sh: line 14: syntax error near unexpected token ~'$'do\r''.
/home/Axium1998/MinecraftMegaLauncher.sh: line 14: 'do
I have no idea what caused this.
# If code needs to be changed, just send me a PM saying something like: Project:MinecraftMegaLauncher Line #<line number> = <changed code>
# if it works (I bet it will, but for me to learn xP )it will be replaced/fixed.
export mc=$HOME/.minecraft
export mcB=$HOME/officialBackup
export tekkit=$HOME/.technic
export tekkitB=$HOME/tekkitBackup
export ftb=$HOME/.feedthebeast
export ftbB=$HOME/ftbBackup
export options=("Official" "MagicLauncher" "Tekkit" "FTB" "Backup" "Restore" "Quit")
echo "==========MinecraftMegaLauncher=========="
echo "This currently supports the following launchers: Official, Magic, Tekkit, and FTB, and doing backups as well!"
echo "I (AXIUM1998) am not responsible for data loss/corruption while backing up/restoring. (It is still indev)"
echo "Also, if there is a launcher you want to be in this mega launcher, I will consider implementing them."
echo "BUG: Running restore twice in a row (running restore, then running it again immeditely) will erase all mc data."
cd $HOME
select optL in "${options[#]}"
do
case $optL in
"Official")
echo "Starting the Official launcher..."
java -jar minecraft.jar
;;
"MagicLauncher")
echo "Starting the MagicLauncher..."
java -jar magic.jar
;;
"Tekkit")
echo "Starting the Tekkit launcher..."
java -jar tekkit.jar
;;
"FTB")
echo "Starting the FTB launcher..."
java -jar ftb.jar
;;
"Quit")
echo "Quitting..."
break
;;
"Backup")
echo "Starting the backup..."
echo "Please input your password (Admin needed :( )"
sudo touch dv
sudo rm dv
if [ ! -d $mcB ]; then
sudo mkdir $HOME/officialBackup
fi
if [ ! -d $tekkitB ];then
sudo mkdir $HOME/tekkitBackup
fi
if [ ! -d $ftbB ]; then
sudo mkdir $HOME/ftbBackup
fi
cd $mcB
sudo rm -rf *
cd $tekkitB
sudo rm -rf *
cd $ftbB
sudo rm -rf *
sudo cp -R $mc/* $mcB/
sudo cp -R $tekkit/* $tekkitB/
sudo cp -R $ftb/* $ftbB/
echo "Backup complete"
echo "Making current user owner of files..."
sudo chown -R $USER $mcB
sudo chown -R $USER $tekkitB
sudo chown -R $USER $ftbB
echo "User $USER now can write to backed up folders"
;;
"Restore")
echo "Starting the restoration..."
echo "Admin is, again, required :( "
sudo touch dv
sudo rm dv
cd $mc
sudo rm -rf *
cd $tekkit
sudo rm -rf *
cd $ftb
sudo rm -rf *
cd $HOME
sudo mv $mcB/* $mc/
sudo mv $tekkitB/* $tekkit/
sudo mv $ftbB/* $ftb/
echo "Restore complete"
;;
*)
echo "Invalid operand.";;
esac
done
edit: may not be exact line. I changed it after I last uploaded it

Answer 1

My wild guess is that you converted your script to Windows format (perhaps copying it from Windows) and then you receive this error: unexpected do\r because the \r is unexpected.
Use dos2unix to convert it.